Joseph kaye



(No Model.)

J. KAYE.

LOCK.

Patented Mar. 31, 1891.

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UNITED STATES PATENT OEErcE.

JOSEPH KAYE, OF LEEDS, ENGLAND.

LOCK.

SPECIFICATION forming part of Letters Patent No. 449,160, dated March 31, 1891.

Application filed June 28, 1890. Serial No. 357,030- (No model.) Patented in England March 28, 1889, No. 6,31l,'and in Belgiuin February 11, 1890, No- 89,483.

To aZZ whom, it may concern:

Be it known that I, JOSEPH KAYE, a subject of the Queen of Great Britain and Ireland, and residing at Kirkstall, Leeds, in the county of York, England, have invented certain new and useful Improvements in Locks, (for which I have obtained Letters Patent in England, No. 5,311, dated March 28, 1889, and in Belgium, No. 89,483, dated February 11, 1890,) of which the following is a specification.

The object of this invention is to give greater security and strength to lever-locks made on the mortise, rim, orfiush principle; and it consists in fixing thelevers upon a fulcrum-pin at the inner end of the lock-case, and for the opposite ends of the levers to project within a slot or recess in the lock-bolt made to carry its full thickness for some distance inside the lock-case, and in which notches or recesses may be cut on each side of the slot for engaging with the ends of the levers in securing thelock-bolt in its required position, and for preventing the lock-bolt being opened except by its proper key.

In explaining my invention more in detail reference is made to the accompanying sheet of drawings, in which- Figure 1 represents a view of the interior of a lock made according to my invention and in which the lock-bolt is withdrawn. Fig. 2 is a similar view with the lock-bolt shot, Fig. 3, a similar view showing a further extension of thelock-bolt and position of levers when operated by a master-key. Fig. at is a plan of the lock-bolt. Fig. 5 represents a combined lock and latch with the levers engaged in the lock-bolt recess, and Fig. 6 a similar view with the lock-bolt shot or protruding beyond the face of the lockcase.

In all the figures similar letters indicate similar parts where they appear.

The levers A may be of any number, as in ordinary locks, and are mounted on a ful crum-pin B, fixed at the inner end of the lock-case O. The other ends of the levers at B terminate within a slot or recess S cut in the lock-bolt D, which is of the same strength as the portion of the bolt projecting beyond the face-plate E, when the bolt is shot for On the top and bottom of the slot looking.

or recess S there are cut notches F and F for receiving the projections A and A By the former engaging with the notches F the lock-bolt is retained in its desired position, and by the projections A engaging with the top notches F the lock-bolt D cannot be 0perated, as hereinafter described.

The key-hole G is placed at a pointnearer the fulcrum-pin 13 than the face-plate E, so that a slight movement of the levers A atthe point where they are acted on by the key is to some extent multiplied at the end A A thereby making the look more sensitive and difficult to open, except by a key having the wards accurately out to fit thetlevers.

The width of the levers at A and A is equal to the width of the slot or recess S, and when the levers are moved the proper distance by the bit or operating portion of the key, so that the-wide ends of all the levers at A and A correspond in height with the slot or recess S, the bolt D can then be operated by revolving the key in the ordinary manner until all the projections A are opposite the next notch F, into which they are allowed to descend, and thereby retain the lock-bolt D in the position as shown by full lines in Fig. 2, and when using a grand master key the lock-bolt D may be operated to the extent shown by Fig. 3, when the ends of the levers are allowed to descend to the position shown, and thus to support the lockbolt by the ends of the levers resting against the curved portion at H between the thin part of lock-bolt plate at D and the full thickness of lock-bolt at D, and by the arm or projection H at the opposite end of each lever being against the flange of the lockcase they act as a direct support to the lockbolt, so that the same cannot be moved inwardly until the levers A are raised by the introduction of the key.

Should any of the wards of the key not correspond with the levers A, so that all are operated the same distance, the projections A of one or more levers will remain some distance within the notch F, or the ends A will be raised so far as to engage with one of the top notches F, thus keeping the lockbolt D secure.

Figs. 5 and 6 show an arrangement by which my object may be accomplished with a leek-bolt having a recess or notch oi a ditlercntconfiguration to those before described and in which case the loclc'bolt If) retains its full thickness For some distance within the lock-case.

Instead of cutting a slot or recess S with notches at each side thereof, as before described, I cut a recess of a shape somewhatas shown at J, the width of the narrow portion of the recess or opening at J being equal to the width of the end of the levers at A, so that when all the levers are raised by the key to the proper height the loclebolt I) may he moved in the direction required, the levers A affording a direct support to the lock-bolt, both when withdrawn, as shown by Fig. 5, and shot, as shown by Fig. 6, by the end of the levers at A coming in contact with the solid or thick part of the lock-bolt and the arm A at the opposite end of each lever being against the lock-case.

'lhe latelrtongue 1C, lever Ii, spiral Sl'll'lllg,

and spindle S comprise a latch of the wellknown push-and-pull principle, and in both arrangements the loek'bolts inside the case are guided and supported in therear by a thin plate-extension I).

\Vhat I claim is 1. Locks in which are combined aseries of levers A, having projections A and A for engaging in notches F and F, cut in thelockbelt I), for the purpose hereinbefore described.

2. Locks in which the levers A not as direct support to the lock-bolt D, by one end engaging in a recess or in contact with the loek-holt and the other end against some portion of the lock-case, substantially in the manner shown and hereinbefore described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOSEPH KAYE.

Witnesses:

.INO. GILL, W n. 'Pausr. 

